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Finding the Fourth Proportional to 86,775.76, 119,756.64 and 49,050.32

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Solution

The fourth proportional to 86,775.76, 119,756.64 and 49,050.32 is: 67,692.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,775.76 : 119,756.64 = 49,050.32 : x
  2. Step 2: Convert to fraction form
    86,775.76/119,756.64 = 49,050.32/x
  3. Step 3: Cross multiply
    86,775.76x = 119,756.64 × 49,050.32
  4. Step 4: Simplify right side
    86,775.76x = 5,874,101,514.12
  5. Step 5: Solve for x
    x = 5,874,101,514.12/86,775.76
  6. Step 6: Final answer
    x = 67,692.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.